NeetCode 150 / Heap / Priority Queue 09.06 · Problem Design Twitter Medium Merge k sorted lists with a heap 1 video LC 355 Pro This problem is part of solulu ProDesign a simplified Twitter:Sign in to continue See plansLifetime ₹1,999 ₹999 · Launch offer Mark this problem as solved when you are finished. Ask a doubt Mark done ← PreviousTask Scheduler Next →Find Median from Data Stream Item 69 of 150 · updated 2026-10-12